added nvim surround, refactoring, lsp keys

.config/nvim/lua/plugins/nvim-tree.lua

@@ -0,0 +1,10 @@
+return {
+    'nvim-tree/nvim-tree.lua',
+    config = function()
+        require("nvim-tree").setup()
+    end,
+    keys = {
+        { "<M-n>",      "<cmd>NvimTreeToggle<cr>",  desc = "Toggle [N]vimTree" },
+        { "<leader>nr", "<cmd>NvimTreeRefresh<cr>", desc = "[N]vimTree [R]efresh" },
+    }
+}